From 6c5041543c4572c7a125af00aef2d0b710c68509 Mon Sep 17 00:00:00 2001
From: Andrea <nullndr@proton.me>
Date: Thu, 28 Aug 2025 14:44:25 +0200
Subject: [PATCH] chore: add basic utilities

---
 common/utils.c      |  2 --
 include/arguments.h | 83 +++++++++++++++++++++++++++++++++++++++++++++
 include/utils.h     |  6 ++++
 src/main.c          |  7 +++-
 src/utils.c         | 20 +++++++++++
 5 files changed, 115 insertions(+), 3 deletions(-)
 delete mode 100644 common/utils.c
 create mode 100644 include/arguments.h
 create mode 100644 src/utils.c

diff --git a/common/utils.c b/common/utils.c
deleted file mode 100644
index 50ed0cf..0000000
--- a/common/utils.c
+++ /dev/null
@@ -1,2 +0,0 @@
-
-#include "utils.h"
diff --git a/include/arguments.h b/include/arguments.h
new file mode 100644
index 0000000..2f2b0aa
--- /dev/null
+++ b/include/arguments.h
@@ -0,0 +1,83 @@
+
+#ifndef ARGUMENTS_H
+#define ARGUMENTS_H
+
+#include <argp.h>
+#include <stdlib.h>
+
+struct arguments {};
+
+#define USAGE 0x123
+
+static struct argp_option options[] = {
+    {
+        .name = "help",
+        .key = 'h',
+        .arg = 0,
+        .flags = 0,
+        .doc = "Show this help list",
+        .group = -1,
+    },
+    {
+        .name = "usage",
+        .key = USAGE,
+        .arg = 0,
+        .flags = 0,
+        .doc = "Give a short usage message",
+        .group = 0,
+    },
+    {
+        .name = "version",
+        .key = 'v',
+        .arg = 0,
+        .flags = 0,
+        .doc = "Print program version",
+        .group = -1,
+    },
+    {0},
+};
+
+static error_t parser(int key, [[gnu::unused]] char *arg,
+                      struct argp_state *state) {
+
+  [[gnu::unused]]
+  struct arguments *arguments = (struct arguments *)state->input;
+  switch (key) {
+  case USAGE: {
+    argp_state_help(state, state->out_stream,
+                    ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
+    break;
+  }
+#undef USAGE
+  case 'h': {
+    argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
+    break;
+  }
+  case 'v': {
+    fprintf(state->out_stream, "%s\n", argp_program_version);
+    exit(0);
+    break;
+  }
+  case ARGP_KEY_ARG: {
+    return ARGP_ERR_UNKNOWN;
+  }
+  case ARGP_KEY_NO_ARGS: {
+    return 0;
+  }
+  case ARGP_KEY_END: {
+    return 0;
+  }
+  default:
+    return ARGP_ERR_UNKNOWN;
+  }
+  return 0;
+}
+
+static struct argp argp = {
+    .options = options,
+    .parser = parser,
+    .args_doc = "",
+    .doc = "",
+};
+
+#endif
diff --git a/include/utils.h b/include/utils.h
index 451e37f..ac56a2d 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -2,4 +2,10 @@
 #ifndef UTILS_H
 #define UTILS_H
 
+void print_usage(const char *prog_name);
+
+void log_info(const char *fmt, ...);
+
+void log_error(const char *fmt, ...);
+
 #endif
diff --git a/src/main.c b/src/main.c
index ab4d7a9..53cc3a1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,2 +1,7 @@
+#include "arguments.h"
 
-int main(int argc, char **argv) { return 0; }
+int main(int argc, char **argv) {
+  struct arguments arguments = {};
+  argp_parse(&argp, argc, argv, ARGP_NO_HELP, 0, &arguments);
+  return 0;
+}
diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..7c8a59e
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,20 @@
+
+#include "utils.h"
+#include <stdarg.h>
+#include <stdio.h>
+
+void log_info(const char *fmt, ...) {
+  va_list args;
+  va_start(args, fmt);
+  fprintf(stdout, "[INFO] ");
+  vfprintf(stdout, fmt, args);
+  va_end(args);
+}
+
+void log_error(const char *fmt, ...) {
+  va_list args;
+  va_start(args, fmt);
+  fprintf(stderr, "[ERROR] ");
+  vfprintf(stderr, fmt, args);
+  va_end(args);
+}